System Design

Components

• Web server: Go HTTP server, port 8080
• Database: SQLite (single file, WAL mode)
• Background jobs: In-process goroutine pool
• Email: Resend API for transactional emails
• Analytics: Self-hosted Plausible instance

Data Flow

1. User creates launch → stored in SQLite
2. Checklist items tracked with timestamps
3. On launch day, background job sends notifications
4. Post-launch, analytics aggregated nightly